Verify Front of pages is selected for Viewing and print the front of the notecards

Select Back of pages for Viewing and print the back of the notecardsNOTE: Since the back of the pages are printed in reverse order (last page is printed first), keep the pages in the same order as they were after Step 1. Also,
be sure to feed the pages in the same direction as you did in Step 1.

Cut out the notecards by cutting along each horizontal and vertical dotted line

Which part of the intrinsic conduction system normally initiates the depolarizing impulse that causes a heartbeat?

back 47

SA node

front 48

Which of these structures conduct(s) action potentials the slowest?

back 48

AV Node

front 49

At what point in the cardiac cycle is pressure in the ventricles the highest (around 120 mm Hg in the left ventricle)?

back 49

ventricular systole

front 50

During which of these stages are the pulmonary and aortic valves open?

back 50

phase 2b

front 51

Which best describe the isovolumetric contraction phase of the cardiac cycle?

back 51

As ventricular systole start, the AV valves are closed and the semilunar valves are closed. Because the ventricles are contracting and both valves are closed, pressure increases rapidly leading to ejection.

front 52

As your muscles contract during activity, more blood is returned to the heart. Which variable would be affected and what would be the outcome of this action?

back 52

Preload would be increased, which would increase cardiac output.

front 53

Which chamber of the heart has the highest probability of being the site of a myocardial infarction?

back 53

left ventricle

front 54

The atrioventricular (AV) valves prevent backflow of blood into the atria during ventricular contraction.

back 54

true

front 55

Name the ridged bundles of muscle found projecting inside the right atrium.

back 55

Pectinate muscles

front 56

Identify the right atrioventricular valve

back 56

pulmonary valve

front 57

Identfiy the valve located at the exit of the right ventricle.

back 57

pulmnary semilunar valve

front 58

The moderator band is found on both the right and left side of the heart.

back 58

true

front 59

Oxygenated blood flows through the right side of the heart.

back 59

false

front 60

Identify the most muscular chamber.

back 60

left ventricle

front 61

Name the inner lining of the heart.

back 61

Endocardium

front 62

Identify the valve found between the left atrium and left ventricle.

back 62

Bicuspid (mitral) valve

front 63

What heart chamber pushes blood through the aortic semilunar valve?

back 63

left entricle

front 64

Name the needle like ridges of muscle lining the ventricles.

back 64

Trabeculae carneae

front 65

What fibrous structure functions to anchor the atrioventricular valves in a closed position?

back 65

Chordae tendineae

front 66

Blood on the right never mixes with blood on the left, once the heart is fully developed.

back 66

true

front 67

What is the function of the coronary circulation?

back 67

Provide a blood supply to the heart

front 68

What is the ligamentum arteriosum?

back 68

A remnant of the ductus arteriosus

front 69

Which chamber of the heart exits into the pulmonary trunk?

back 69

Right ventricle

front 70

Identify the ear like flaps that are attached to the top chambers of the heart.

back 70

Auricle

front 71

The first branch off the arch of the aorta is the brachiocephalic artery in both the sheep and the human.

back 71

true

front 72

The base of the heart is located at the bottom of the heart.

back 72

false

front 73

The left side of the heart pumps the same volume of blood as the right.

back 73

false

front 74

If the aorta and pulmonary trunk were switched, oxygen rich blood would be pumped from the left ventricle to the lungs.